cancelled notes found during past brick hunting

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Hello Members
I would like your opinion on this little puzzle of notes i have had for quite a while.  The notes when i was going through the brick came across with some black strokes on them. 
My guess is they were to be removed but got through the QC.
I have attached some pictures  for you.  I gather these were from  multiple sheets of errors.
any thoughts are appreciated.
HPV 0488473/474/599 FP14 BP10
HPV 0656474/474/599 FP 43 BP 36
HPV 0664473/474/599 FP25 BP46
HPV 0672473/474/599 FP 48 BP 11
HPV0680473 /474/599 FP27 BP27
HPV 0688473/474 F11 BP46
HPV 0696473 /474/599 FP 46 BP 25
HPV 0648500 FP54 BP 12



QUESTION;
Has anyone ever come across this before?
why was the 0488473 have a black X on it.

Thanks

Polarbear

please see photos

close up

Uh oh.  Would you even be able to bring these back to the bank?  Do these types of markings invalidate the note in any way?

My guess is the X was for a single note to be removed whereas the single line was for the entire sheet.  Is it just a coincidence that the last 3 digits are the same on the single note and the sheet notes?  That one didn't come from the same block, did it?

Sorry, more questions than answers from me.

The Bank will accept the notes for face value
As well as the bank of Canada will accept notes
In any condition
You can check their website for more information on returning notes
I have seen cancellation marks on notes but those notes had errors on them
I do not see any errors on these notes
So not sure why there would be cancellation marks on them?